What should I do if I can't return to the original page after receiving the verification code sent by SMS?

You need to re-enter the page to accept the new verification code, and the old verification code cannot be used. Because the webpage is set to leave the page, reopening will reset the page, but now the mobile phone basically has a background function, so you don't need to leave the page, just shrink the page, then look at the verification code and return to the page where you need to enter the verification code.